可控优先级的Linux实时化策略研究  

Linux real-time straegy with priority can controlled

作　　者：付建斌 施忠华[2] 衷卫声[2] 

机构地区：[1]江西抚州三和医药化工有限公司,江西抚州344400 [2]南昌大学过程装备与测控工程系,江西南昌330031

出　　处：《江西化工》2012年第2期74-76,共3页Jiangxi Chemical Industry

基　　金：江西省科技计划(2011ZBBI90006)

摘　　要：Linux是一个开源的、通用的操作系统,不适合实时应用。针对上述问题,对Linux进行实时化改造。提出一种基于中断号的优先级可控的Linux实时化策略。临界区域的不可抢占性影响了Linux实时性,对此提出了一种把大的临界区域进行分化的策略,能有效地避免了进程优先级倒置的发生。Linux is designed to be a open-soure general-purpose operating system,it＇s not suitable for real-time applications.For the real-time requrement,it need to modify the Linux.The paper gives a real-time straegy based on priority controlled by interrupt number.Due to the critical section can＇t be grabed,a new straegy base on cutting large critical section into small ones,is been proposed.This straegy can effectively avoid process priority inversion phenomenon occurs.

关 键 词：实时操作系统 可控优先级 优先级倒置 

分 类 号：TP316.81[自动化与计算机技术—计算机软件与理论]